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R05240 Alloy vs. Austempered Cast Iron

R05240 alloy belongs to the otherwise unclassified metals classification, while austempered cast iron belongs to the iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is R05240 alloy and the bottom bar is austempered cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 150
180
Elongation at Break, % 25
1.1 to 13
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 57
62 to 69
Tensile Strength: Ultimate (UTS), MPa 270
860 to 1800
Tensile Strength: Yield (Proof), MPa 170
560 to 1460

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Specific Heat Capacity, J/kg-K 190
490
Thermal Expansion, µm/m-K 6.8
13

Otherwise Unclassified Properties

Density, g/cm3 14
7.5
Embodied Water, L/kg 460
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
19 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 90
880 to 3970
Stiffness to Weight: Axial, points 6.3
13
Stiffness to Weight: Bending, points 13
25
Strength to Weight: Axial, points 5.4
32 to 66
Strength to Weight: Bending, points 6.8
27 to 44
Thermal Shock Resistance, points 18
25 to 53

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Arsenic (As), % 0
0 to 0.020
Carbon (C), % 0 to 0.010
3.4 to 3.8
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0
0 to 0.8
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
89.6 to 94
Magnesium (Mg), % 0
0 to 0.040
Manganese (Mn), % 0
0.3 to 0.4
Molybdenum (Mo), % 0 to 0.020
0 to 0.3
Nickel (Ni), % 0 to 0.010
0 to 2.0
Niobium (Nb), % 35 to 42
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.020
0
Phosphorus (P), % 0
0 to 0.040
Selenium (Se), % 0
0 to 0.030
Silicon (Si), % 0 to 0.0050
2.3 to 2.7
Sulfur (S), % 0
0 to 0.020
Tantalum (Ta), % 57.9 to 65
0
Tin (Sn), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 0 to 0.050
0
Vanadium (V), % 0
0 to 0.1